to prepare 100 mL of a 0.5 M solution of CuSO4 using water as the solvent. Calculate the amount of solid needed.

100 mL of a. 5 M solution

= 0.1 L of. 5 M solution

This solution will contain. 1 x. 5 mole of solute

=.05 mole of solute

molecular weight of CuSO₄

= 63.5 + 32 + 64

= 159.5 gm

one mole of CuSO₄ = 159.5 gm

.05 mole = 159.5 x. 05 gm

= 7.975 gm

7.975 gm of CuSO₄ will be required.